說明
Original provider: National Marine Mammal Laboratory Dataset credits: National Marine Mammal Laboratory Abstract: Aerial surveys was conducted in 1997 progressing from east to west, to estimate abundance of the Southeast Alaska (SEA, 9,844 km survey effort), Gulf of Alaska (GOA, 10,127 km survey effort), and Bering Sea (BS, 7849 km survey effort) harbor porpoise stocks. In addition, 1355 km of survey effort during a Cook Inlet beluga survey were analyzed to add to the coverage for the GOA stock. Data from an independent observer concentrating on the trackline was used to estimate perception bias. Significant differences in g(0) and effective strip width (ESW) were found between the survey conducted in 1997 and the 1998 and 1999 surveys, therefore 1997 was treated separately. In both analyses, g(0) was dependent on visibility reported by observers, and in the 1997 data ESW was dependent as well. The 1997 survey included the inland waters of southeastern Alaska and the eastern Gulf of Alaska from Dixon Entrance to Cape Suckling
資料紀錄
此資源出現紀錄的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 602 筆紀錄。
此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。
版本
以下的表格只顯示可公開存取資源的已發布版本。
如何引用
研究者應依照以下指示引用此資源。:
Hobbs, R. 2004. NMML Small Cetacean Aerial Survey 1997. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/e0b19e8e.
權利
研究者應尊重以下權利聲明。:
此資料的發布者及權利單位為 OBIS-SEAMAP。 This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
GBIF 註冊
此資源已向GBIF註冊，並指定以下之GBIF UUID: cb6a64b7-d290-4b7c-a23c-052882c96d83。 OBIS-SEAMAP 發佈此資源，並經由Ocean Biodiversity Information System同意向GBIF註冊成為資料發佈者。
關鍵字
Occurrence; Observation; Marine Biology; Visual sighting; Aircraft; Sightings; harbor porpoise; survey; aerial survey; cetacean; Occurrence
外部資料
此資源尚有其他格式可用
| OBIS-SEAMAP Dataset Page | https://seamap.env.duke.edu/dataset/115 UTF-8 Interactive map |
|---|---|
| FGDC Metadata | https://seamap.env.duke.edu/dataset/115/fgdc UTF-8 XML |
| EML Metadata | https://seamap.env.duke.edu/dataset/115/eml UTF-8 XML |
聯絡資訊
- 元數據提供者 ●
- 散布者
- A328 LSRC building
地理涵蓋範圍
Oceans,Alaska,Eastern Alaska,Gulf of Alaska,Dixon Entrance,Cape Suckling
| 界定座標範圍 | 緯度南界 經度西界 [54.454, -143.953], 緯度北界 經度東界 [60.133, -131.005] |
|---|
分類群涵蓋範圍
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Order | Cetacea (Cetaceans) |
|---|---|
| Genus | Mesoplodon (Beaked whales) |
| Species | Balaenoptera physalus (Fin whale), Eschrichtius robustus (Gray whale), Eumetopias jubatus (Steller sea lion), Lagenorhynchus obliquidens (Pacific white-sided dolphin), Megaptera novaeangliae (Humpback whale), Orcinus orca (Killer whale), Phoca vitulina (Harbor seal), Phocoena phocoena (Harbor porpoise), Phocoenoides dalli (Dall's porpoise), Physeter macrocephalus (Sperm whale) |
時間涵蓋範圍
| 起始日期 / 結束日期 | 1997-05-28 / 1997-07-28 |
|---|
計畫資料
無相關描述
| 計畫名稱 | NMML Small Cetacean Aerial Survey 1997 |
|---|---|
| 經費來源 | NA |
參與計畫的人員:
- 擁有者
取樣方法
NA
| 研究範圍 | NA |
|---|
方法步驟描述:
- NA
收藏資料
| 蒐藏名稱 | zd_115 |
|---|---|
| 蒐藏編號 | zd_115 |
| 上層採集品識別碼 | OBIS-SEAMAP |
額外的詮釋資料
marine, harvested by iOBIS. Although the previous harbor porpoise surveys (1991- 1993) used a vessel platform for the inside waters of Southeast Alaska (Dahlheim et al. 1992, 1993, 1994), the current survey was conducted entirely from aircraft.
| 目的 | A 3-year survey began in 1997 to complete a new abundance estimate by 1999. This survey will also include an abundance estimate for Dall’s porpoise (Phocoenoides dalli). Once the 3 years of surveys are completed, the data will be used to estimate annual abundance of harbor porpoise and Dall’s porpoise, which is one of the key pieces of information needed to manage marine mammal-fishery interactions, as required under the Marine Mammal Protection Act. |
|---|---|
| 替代的識別碼 | https://doi.org/10.82144/e0b19e8e |
| https://seamap.env.duke.edu/dataset/115 | |
| https://www.gbif.org/dataset/cb6a64b7-d290-4b7c-a23c-052882c96d83 | |
| https://obis.org/dataset/2c2569fd-7290-4b3d-8b56-7fe9902a2084 | |
| cb6a64b7-d290-4b7c-a23c-052882c96d83 | |
| https://ipt.env.duke.edu/resource?r=zd_115 |